公开(公告)号：US12101052B2

公开(公告)日：2024-09-24

申请号：US17880690

申请日：2022-08-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xinwei Chen ,  Yuanmiao Zhao ,  Da Xie ,  Yiqi Liang ,  Yizhen Hou ,  Zhimin Dan

IPC: H02P6/21 ,  B60L50/60 ,  H02P1/02 ,  H02P21/22

CPC classification number: H02P6/21 ,  B60L50/60 ,  H02P1/029 ,  H02P21/22

Abstract: An electric vehicle control system and a control method, an electric vehicle power-on method, an electric vehicle power-off method, and an electric vehicle charging method are disclosed in this application. The control system includes a domain control unit controlling an electric vehicle, a current sampling unit sampling the current of a power battery and a motor of the electric vehicle and sending sampling signals to the domain control unit, and electrical device, driven by the power battery, sampling the current flowing through it and sending the sampling signals to the domain control unit. The domain control unit, according to the sampling signals sent by the electrical device and the current sampling unit, manages the power battery and controls a motor driver module and the electrical device. The structure of the control system and the control policy are simplified and the power-on and power-off time is shortened.

公开(公告)号：US20230256867A1

公开(公告)日：2023-08-17

申请号：US18303584

申请日：2023-04-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Jinfeng Gao ,  Jin Huang

IPC: B60L58/27 ,  B60L1/02 ,  B60L58/25 ,  B60L50/51 ,  B60L53/22 ,  H01M10/63 ,  H01M10/625 ,  H01M10/615 ,  H02M7/537

CPC classification number: B60L58/27 ,  B60L1/02 ,  B60L58/25 ,  B60L50/51 ,  B60L53/22 ,  H01M10/63 ,  H01M10/625 ,  H01M10/615 ,  H02M7/537 ,  H01M2220/20 ,  B60L2210/40

Abstract: A traction battery heating circuit, system, and control method, and an electric device are provided. In some embodiments, the traction battery heating circuit includes: a power supply module, including at least one battery group; an inverter module, connected to the power supply module and including an M-phase leg circuit, where the leg circuit is connected in parallel to the battery group, and M is an even multiple of three; a driving module, including a motor having M windings, where the M windings are respectively connected to M phase legs of the leg circuit in one-to-one correspondence; and a control module, connected to the leg circuit, configured to control upper legs of at least three phase legs in the leg circuit and lower legs of the same number of phase legs in remaining legs to be turned on.

公开(公告)号：US11695317B2

公开(公告)日：2023-07-04

申请号：US17856453

申请日：2022-07-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jinfeng Gao ,  Guiying Lin ,  Weichen He ,  Zhimin Dan ,  Lijun Hang ,  Yuanbin He ,  Ke Chen ,  Jiarui Liao

IPC: H02M1/00 ,  H02M3/00 ,  H02M3/335

CPC classification number: H02M1/0003 ,  H02M1/0025 ,  H02M3/01 ,  H02M3/33573

Abstract: Embodiments of this application provide a converter control method, a converter control apparatus, and a readable storage medium. The control method includes: obtaining a real-time input voltage and a real-time output voltage of a converter; determining a corresponding real-time closed-loop control output value of the converter based on the real-time input voltage and the real-time output voltage by using a closed-loop control algorithm; determining a real-time control strategy of a switch tube of the converter from at least three control strategies based on the real-time closed-loop control output value; and controlling the switch tube based on the determined real-time control strategy. The control method is used to implement efficient and high-precision voltage stabilization control.

公开(公告)号：US11689143B2

公开(公告)日：2023-06-27

申请号：US17858862

申请日：2022-07-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiong Zheng ,  Xianxi Pan ,  Zhimin Dan ,  Hong Wang

IPC: H02P27/08 ,  H02M7/5395

CPC classification number: H02P27/08 ,  H02M7/5395 ,  H02K2213/03

Abstract: This application provides an electric motor control method and device, a system, and an electric vehicle. The method includes: obtaining an input power and an output power of an electric motor; calculating a loss power based on the input power and the output power; determining a target d-axis current of the electric motor, where the target d-axis current is calculated by a calculation module based on the loss power, the calculation module includes a tracking differentiator, and the calculation module operates in a controller; and determining a duty ratio based on the target d-axis current and a preset q-axis current, and inputting the duty ratio into an inverter so that the inverter drives, based on the duty ratio, the electric motor to operate.

公开(公告)号：US11652352B2

公开(公告)日：2023-05-16

申请号：US16978683

申请日：2019-12-06

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhimin Dan ,  Jinbo Cai ,  Wei Zhang ,  Yizhen Hou ,  Xiong Zheng

IPC: H02J7/00 ,  H02J7/14

CPC classification number: H02J7/0013

Abstract: The present application provides a charge and discharge circuit, and relates to the field of battery power. The charge and discharge circuit comprises: a charge circuit comprising a battery pack, a first switch set and a charging device connected in series; and a discharge circuit comprising the battery pack, a second switch set and an electrical device connected in series; both the first switch set and the second switch set comprise at least one switch, and the at least one switch in the first and/or second switch set is a semiconductor switch.

公开(公告)号：US11453311B2

公开(公告)日：2022-09-27

申请号：US17541296

申请日：2021-12-03

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaojian Huang ,  Xiong Zheng ,  Xiyang Zuo ,  Zhimin Dan ,  Bao Li

IPC: B60L58/27 ,  H01M10/615 ,  H01M10/63 ,  H01M10/48 ,  H01M10/42 ,  H05B1/02 ,  B60L53/20 ,  H01M10/657 ,  H02P27/06

Abstract: The present application provides a battery thermal management system, a control method and device of a battery heating system, a device, and a medium. The method includes: acquiring a temperature rise rate parameter of the battery; determining proportions of a square wave signal and a sine wave signal in a first control signal of the switch components according to the temperature rise rate parameter; generating the first control signal of the switch components according to the proportions of the square wave signal and the sine wave signal; outputting the first control signal to the switch components to control switching on or off of the switch components via the first control signal, so as to generate an alternating current in a loop connecting the battery and the motor and heat the battery using the alternating current.

公开(公告)号：US11338702B2

公开(公告)日：2022-05-24

申请号：US17390873

申请日：2021-07-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Tiancong Wang ,  Xiyang Zuo ,  Zhimin Dan ,  Xiong Zheng ,  Bao Li

IPC: B60L58/27 ,  H01M10/44 ,  H02J7/00 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  H02P29/68

Abstract: The application provides a control system and method for a battery pack heating system. The control system includes: a battery management system configured to acquire a state parameter of a battery pack, and send heating request information to a vehicle controller when determining the state parameter of the battery pack meets a preset heating condition; a motor controller configured to send, to the vehicle controller, feedback information indicating that a motor of the battery pack heating system is in a non-operating state, when determining the motor is in the non-operating state, and control, in response to a first control signal, a target upper bridge arm switch module and a target lower bridge arm switch module to be periodically turned on or off; and the vehicle controller configured to send the first control signal to the motor controller in response to the heating request information and the feedback information.

公开(公告)号：US20210184486A1

公开(公告)日：2021-06-17

申请号：US17123022

申请日：2020-12-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhimin Dan ,  Jinbo Cai ,  Meilin Chen ,  Yizhen Hou ,  Wei Zhang

IPC: H02J7/00 ,  H02J7/34

Abstract: This application relates to a pre-charging circuit and a method thereof. The pre-charging circuit includes a controller, a PWM control unit, and a drive unit. The controller and the PWM control unit are electrically connected to the drive unit, and the drive unit is connected to a main switch of a battery management system circuit. When the main switch is turned on, the PWM control unit detects a current in the battery management system circuit and outputs a control signal to the drive unit according to the current. The controller outputs a preset PWM signal to the drive unit, which then turns the main switch off or on according to the received control signal and the PWM signal, to pre-charge a load capacitor of the battery management system circuit when the main switch (S1) is turned on, thereby implementing fast pre-charging by adjusting a pre-charging time of the load capacitor.

公开(公告)号：US20210119549A1

公开(公告)日：2021-04-22

申请号：US17137411

申请日：2020-12-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Liansong Wang ,  Zhimin Dan ,  Changjian Liu ,  Fupeng Cai ,  Fuming Ye

IPC: H02M3/335 ,  H02J7/00

Abstract: The present application discloses a wake-up method and wake-up system for a battery management system. The method may include converting, by a conversion unit, a low-voltage power signal detected at a low-voltage input port into a high-voltage wake-up signal, and receiving, by a high-voltage control module, a working voltage provided by a power battery pack under control of the high-voltage wake-up signal; controlling, by the high-voltage control module, the high-voltage transmission module to be turned on, providing the working voltage to a synchronous rectifying module by the turned-on high-voltage transmission module, and converting high-voltage electric energy provided by the power battery pack into low-voltage electric energy; and transmitting, under control of the synchronous rectifying module, the low-voltage electric energy to the low-voltage controller, and waking up the battery management system by the low-voltage controller.

公开(公告)号：US20210119547A1

公开(公告)日：2021-04-22

申请号：US17137165

申请日：2020-12-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Liansong Wang ,  Zhimin Dan ,  Yizhen Hou ,  Fangjie Zhou ,  Changjian Liu

IPC: H02M3/335 ,  H02J7/00

Abstract: The present application discloses a system and method for providing a constant power source. The system includes: a main control module configured to receive a wake-up time and send the wake-up time to a timer device; a timer power supply module configured to supply power to the timer device according to electric energy in a high-voltage battery pack; a high-voltage power supply module configured to supply power to a power conversion module according to the electric energy in the high-voltage battery pack; the timer device configured to set a wake-up clock according to the wake-up time, start timing when a battery management system (BMS) enters into sleep, and send a discharge instruction to the high-voltage battery pack when the timing reaches the wake-up time; the power conversion module configured to convert high-voltage electric energy output from the high-voltage battery pack into low-voltage electric energy and supply power to the BMS.